Locking means for rockable grate bars



Dec. 13, 1949 5. cARRis 2,490,898

LOCKING MEANS FOR ROCKABLE GRATE BARS Filed Nov. 13, 1945 1 INVFNTOR. M5a Patented Dec. 13, 1949 UNITED STATES OFFICE LOCKING MEANS FOR ROCKABLEGRATE BARS In burning some of the qualities and mixtures of coal nowavailable a large amount of clinker is produced, and in the process ofremoving them from the fire box the grates are tipped and unburned fuelfalls into the ash pit causing unnecessary waste. To avoid this and tolessen the care required in attending to the fires I have developed thehereinafter described attachment.

With these and other objects in view that may appear while thedescription proceeds, the invention consists in the novel constructionand arrangement of parts as hereinafter more specifically set forth,claimed and shown in the accompanying drawings forming part of thisapplication and in which:

Fig. l is a plan view with the shaker handle folded back;

Fig. 2 is a perspective with the handle extended;

Fig. 3 is part of a furnace showing the device in position keeping thegrates locked.

In the drawings wherein for the purpose of illustration like numeralsare employed to designate like parts throughout the same the numeral 4denotes generally the locking device which comprises a fiat bar l havingits top surface recessed, as at H, between its ends to receive a handleI pivotally attached at one end to the bar, as at l2. A pair of lugs l3and I4 depend from the under side of the bar ID, the lug l 3 beingdisposed at one end of the bar and the lug l4 intermediate the ends andprotruding forward of one edge of the bar. The lug l3 has an opening 6extending longitudinally of the bar to form a socket for interfittingengagement with the shaker spindle I of the grate bars 9 and is employedwhen the bar In is used for shaking the grates. The lug 14 has anopening 5 extending transversely of the bar In to provide a socket forinterfitting engagement with the shaker spindle when the bar In isemployed to lock the grates against movement. The grate bars 9 arerockably mounted in parallel relation in the ash pit of the furnace 8and are interconnected for movement in unison when oscillated byactuation of the shaker spindle.

In operation, the grate bars 9 are locked against movement bypositioning the bar I0 across the top of the grate bars with the socket5 of the lug l4 engaged with the shaker spindle 15, as disclosed in Fig.3. Until the bar I0 is removed any movement of the grate bars isprevented.

The bar l0 when removed may be employed to shake the grates by engagingthe socket 6 of lug l3 with the shaker spindle I5 and swinging handle 7at right angles to the bar so it may be used as a hand lever foractuating the bar I0 to oscillate the grate bars. The handle 1 also maybe used for pulling the bar I!) from its locking position on the gratebars.

While the preferred embodiment of the invention has been disclosed it isunderstood that minor changes in the construction and arrangement ofcooperating elements may be resorted to within the scope of what isclaimed without departing from the spirit of the invention.

What I claim is:

1. The combination with a furnace grate including a series of rockablegrate bars having a shaker spindle, of a locking bar adapted to extendtransversely across the tops of the grate bars, and a depending lugintermediate the ends of said locking bar having a socket formed thereinfor interfitting engagement with the shaker spindle to secure thelocking bar in looking position.

2. A device of the character described in claim 1 including a hand leverpivotally attached to one end of said bar for horizontal swingingmovement at right angles to said locking bar.

3. The combination with a furnace grate including a series of rockablegrate bars having a shaker spindle, of a locking bar adapted to extendtransversely across the top of said grate bars, a lug depending from thelocking bar intermediate its ends and forward of one edge thereof havinga socket formed therein at right angles to the longitudinal axis of saidlocking bar for interfitting engagement with the shaker spindle of thegrate to secure the spindle and grate bars against movement.

GUS CARRIS.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 439,229 Wodell Oct. 28, 1890711,066 McCurley Oct. 14, 1902 1,068,002 Mueller July 22, 1913 1,228,626White June 5, 1917 1,246,937 Kohout Nov. 20, 1917

